Rod-packing



Patented May s, 1887.

A rBRADPoRD.-

ROD PACKING.

I (No Model.)

Mw L@ m n Wit/masses UNITED STATES PATENT OEEicE.Y

ALDEN BRADFORD, OF FALL RIVER, MASSACHUSETTS.

yROD-PACKING.

SPECIFICATION forming part of Letters Patent No. 362,355, dated May 3l1887.

Application lcd February 8, 1887. Serial No. 226,965. (No model.)

Massachusetts, have invented a new and useful Improvement in Devices forPacking Piston-Rods, of which `the following is a specification.

My invention relates to an improvement in devices for packingpiston-rods; and it consists in the peculiar construction andcombination of devices, that will be more fully set forth hereinafter,and particularly pointed out in the claims.

In the drawings, Figure l is a vertical sectional view of a part ofastcam-cylinder, showing the piston-rod, the stuftingbox, my improvedpacking device, and the manner of using the same. Fig. 2 is a detachedperspective view of my improved packing device.

A represents the head of a steam-cylinder, provided with the usualstufting-boX,.B, having a projecting flange, C.

D represents the pistourod, which works in an opening made in the centerof the cylinder-head, and passes through the center of the stufingbox inthe usual manner.

E represents the packing-gland, which is adapted to enter the opening inthe stuffingbox, and is provided with a projecting annular flange, F,the diameter of which corresponds to the diameter ofthe flange C.

Gr represents the usual clamping-bolts, which project from the Ilange ofthe stuffing-box, and are adapted to secure the packing gland thereto,and to force the said gland into the stuffing-box when the nuts on theclampingbolts are turned'.

In order to cause the piston-rods to be packed steam-tight in thestuffing-box, it is highly desirable that a packing-ring of suitablemate rial be employed,the diameter of which normally exceeds thediameter of the stuffing-box, in order that the said packing-ring may becompressed when forced into the stufiing-box, and thereby caused to bearfirmly against al1 sides of the piston-rod. It requires a considerableexpenditure, however, of time and labor to force such a packing-ringinto the stuffingbox; and the object of my invention is to provide adevice which is adapted to guide and box.

direct the packing-ring into the stufiing-box with ease and facility,and thus enable the packing-ring to be very readily inserted in thestufng-box. Suchadevice I illustrate in Fig. 2, and it consists of anannular collar, II, comprising two semicircular sections, I, which arehinged together on one side, and are provided at their free edges withprojecting lugs or earsK, `adapted to align with each other whenthesections are closed, and provided with aligned. openings adapted toreceive a securing-pin, L, the function of which is to lock the freesides of the sections together. In the center of the collar is made aconical or funnel-shaped opening, N, one half of the said opening beingformed in one section I, and

the other half thereof being formed in the opposing section. The smallerend of the conical opening has a diameter l. corresponding to thediameter of the central opening in the stuffing-box.

M represents cylindrical openings, which are made between the opposingsides of the sections I of the collar, the said openings M being adaptedto receive the clamping-bolts G.

The operation of myinvention is as follows: In order to insert thepacking-ring into the stufng-box of the cylinder-head, the gland E isfirst released from the stuffing-box by unscrewing the nuts on vtheclampingbolts G and drawing the gland outwardly on the piston-rod asuitable distance from thestufiing- The ring or collar H has itssections opened, and isinserted over the piston-rod so as to surroundthe same, and is closed upon the same, the bolts G being caused vtoenterthe openings M between the opposing sides of the hinged sections of thecollar. The latter is arranged so that the smaller end of its conicalopening shall communicate with the open ing in the stuffing-box, asshown vin Fig. 2. rllhe packing-ring O is then inserted in the Vouterside of the conical opening in the collar IOO to be forced rearwardly onthe piston-rod, and it will be readily understood that as the glandmoves rearwardly it forces the packingring rearwardly through theconical opening 5 in the guiding-collar, the latter serving to graduallycompress the pachingring, so that it will be directed easily into thestufiing-box. As soon as the packingring is inserted in the outer end ofthc stliliiiig-box,the guiding-collar i H is renioved by withdrawing thepin L from thelugs or ears K, thus releasing the sections ofthe collar,and enabling thcni to be opened, so that the collar may be taken fronithe engine. The gland is then screwed honie into x the stuffing-box.

Having thus described my invention, I claiml. In a rod-packing, a collarto direct the packing-ring into a stulling-box, the said collar having aconical opening, the inner end of which is of the saine diameter as theopening in the stufiing-box, substantially as described.

2. In a rod-packing, the guiding-collar to direct the packing-ring intothe stalling-box, the said guiding-collar having thehinged sections Iand the conical opening N, made between the said sections, for thepurpose set forth, substantially as described.

In a rod-packing, the guidingcollar to direct a packing-ring into astuffing-box, the said collar comprising the sections I, hinged togetherand provided with the conical opening N, formed between them, the saidsections having the lugs or ears K projecting from their free sides andadapted to align with each other, and the pin L, adapted to extendthrough aligned openings made in the said lugs or ears to lock the freesides of thehinged sections together, substantially as described.

4. In a rod-packing, a collar to direct the packing into a stuiiingbox,and having the funnel-shaped passage to receive the packing, as setforth. i

In testimony that I claim the foregoing as niy own I have hereto affixedmy signature in presence ol' two witnesses.

ALDEIT BRADFORD.

XVitiiesses:

MAJOR GOODWIN, NiELs AMZEN.

